Improvement in chronometers



3 Sheets-Sheet 1- P."BANTEL.

Chronometer.

Patented July 21, 1868.

IT/WE'SJEJ 3 Sheets-Sheet 2 Patented July 21, 1868 IIYVEIYTUR qr/v5.5 sis JMWJZWQ 3 Sh t-S P. BANTELI v ees heet 3 V Chronometer.

Patented July .21, 1868.

/N VE V W ggg m0 ALLwHo 11 MAY eon-emu:

PHILIP? BAVINYT-EL, 0F W-YORK, N. Y,

Letters Patent No. 80,051, dated July 21,1868.-

IMFROVEMENT In csaonousrens.

@5112 tlltlllilt want his time imiters has not mating tart as; same Be it known that I, Palms? BANTEL, of the city, county, and State'of New York, have invented a new,

and useful Improvement in Ghr'oniirneters; and I do hereby declare the following to -be.a clear andexact H description thereof, which will enable others skilled in the art to make and use. the same, reference being had to the accompanying drawings,forming part of this specification, inwhieh- Figure 1, Sheet I, is a front view of a clock-work illustrating my improvement.

Figure 2, Sheet II,' 'is a side view of the samei- Figure 3, Sheet III, is a vertical section of the same, taken through the line w :t, fig. 2.

Similar letters of referene indicate like parts. e I r 7 My inv'ention'relates to that class of clocks whichiarc used as standard chrono ineters in large watch and clock-establishments, telegraioh-oiiices, railroad-oilices, and other placeswhere it is necessary to have always the correct-time;- is designed to furnish a clock that will'keep correct time for months andyears without its being necessary to adjust or regulate it, or even towind up; and it consists in so constructing, combining, and arranging the propelling part er the gearing as to obtain a very slow, steady, and constant initiator-y mov e-1 ment, and in the cbmbination'and arrangement of the minor devices by which this result is more satisfactorily effected, the whole being constructed and arranged as hereinafter more fully described. i i I A is the framework, in which the clock-work is placed, and in which are formedthe bearings for the yarious journals;

. Bis the shaft, around which the cord 0 .is wound in winding up the clock, and from which saidco rd nnwinds as the clock runs. This shaft or drum Imake one and one-eighth inch in diameter, and of such a length that the coxdC-may make seventy-two turns around it.

The journals'of the shaft B revolve in hearings in the frame A,and the projecting end of its forward journal is squared off to receive the key for winding up the said cord C. t

To the forward journal ofthe shaft is attached a gear or driving-wheel, :D, which is made large, and with two hundred and forty teeth, and which is so connectedwith the, gear-wheels of an ordinary elocl work and. with the pendulum, as to make one reygolution in fifteen days. V I

l The gearqvheel D is provided with a ratchet-wheel, E", and pawl, F, in the ordinary manner.

,Fromthesha'ft the cord '0 passes over thescrew-pulley G, whiehis placed upon the screw'H, the ends of which are attached to thevframe A, and the pitch of the threads of which equals the diameter of the cord 0, sothat as the said cord unwinds itself from the shaft B, {the pulley G mayalways adjust itself to a position directly over'the part of the shaft B from which the cord is unwinding.

Fromthe pulley G the cord C passes down {0 and around the b'ulleyl swivelled to ,one end of the bar J, to the other end of whichis swivelled the pulley. K, and from which bar is suspended the weight, by means of the hook N.

frame A. From the, pulley L the cord 0 passes around the swivelled-ipulley K,'nn l"its end is attached to the fixed support M. v 1

This-construction and arrange'meht of the pulleys I K L allow, the cord C to-take always that position which the weight naturally causes, the said I and K being self-adjusting, thus greatly diminishing the friction. If desired, the end of the cord 0, may be removed from the support M,-and attached to the shaft 0, of exactly thesame size as the shaft B, with ivhich itis connected by the equal gear-wheels P, so that the said shafts may move together. In this case the cord 0 should be Wound equally upon both the shafts B and 0,.as shown injred in fig. 2,

By this construction the leverage-of the wei ht is doubled, so that the said weight maybe diminished one-half.

From the pulley .I the cord- 0 passes to and oi er the pulley L, the supports of which are attached to the By this construction the clock will run only half the time it would under the construction before described,- that is to say, only oueiand it half year. 1 i

In case the clock is set up in such a. situation that a case deep enough for the first-described construction cannot conveniently be used, the fixed pulley L may be replaced by the pulley-blocks Q, shown in red in'fig. 3. In this case the cord, 0 must be divided, the free end of each part being attached to. each of the blocks Q, as shown, the weight also being divided, each half being supported beneath each of the blocks Q by me'ens of a pair of'swivelled pulleys sizhilarto the-pulleys I K. In this case the cleck will runthe full time of three years with one-beltthe depth ofcsse. I

"Having thus described my invention, I claim as new, and desire to secure by Letters Patent 1. The combination of the shafts B and 0, one or both, and large gear-wheelD, said parts being constructed as described, with the ordinary clock-Work of a. chronometer, substantially as and for the purpose set forth. .2. The combination of the selt edjusting screw-pulley G and stationary screw H with cord C and shaft B,-

substantially as herein shown and described, and for the purpose set forth.

3. The swivelled pulleys I and K, in combination with the cord 0,, eight-bar J, and pulley L, 'or it's equiv alent, substantially as herein shown and described, and for the purpose set forth. v

The above specification of my invention signed by me, this 17th day of February, 1868. c

' PHILIP? Witnesses:

SOLOMON H. GnsTz, LOUIS FISLER. 

